]]>https://knowledgecenter.cimmyt.org/cgi-bin/koha/opac-detail.pl?biblionumber=17683Wheat rusts and the costs of genetic diversity in the Punjab of Pakistan ISBN https://knowledgecenter.cimmyt.org/cgi-bin/koha/opac-detail.pl?biblionumber=17691
By Heisey, P.W..
1997